Data Scientist

Coltech
London

Job Description

Data Scientist (Machine Learning & Generative AI) – Contract

London (Hybrid – 2 days onsite)

Long-term Contract (Inside IR35)

The Opportunity

We’re hiring multiple Data Scientists to join a major, enterprise-scale programme focused on machine learning and Generative AI innovation .

This is a long-term contract opportunity where you’ll work on real-world, production-grade AI solutions , including LLM-powered applications, NLP pipelines, and emerging agentic systems .

You’ll be operating in a highly data-driven environment, solving complex business problems and delivering impactful AI use cases at scale.

Key Responsibilities

  • Build, deploy, and optimise machine learning and NLP models in production
  • Develop end-to-end data science pipelines
  • Design and prototype Generative AI solutions (LLMs, embeddings, prompt engineering)
  • Work with BigQuery ML and cloud platforms for large-scale modelling
  • Translate business challenges into scalable data solutions
  • Collaborate with cross-functional teams across engineering and business
  • Mentor junior team members where required

Required Experience

  • 10+ years in Data Science, Machine Learning, or AI Engineering
  • Strong Python skills and experience with ML frameworks
  • Proven track record delivering end-to-end ML/NLP solutions
  • Hands-on experience with Generative AI (LLMs, embeddings, prompting)
  • Experience with cloud platforms (GCP, AWS, or Azure)
  • Exposure to BigQuery ML or similar platforms

Preferred Experience

  • Background in financial services or regulated environments
  • Experience with fraud, risk, or customer analytics
  • Exposure to LLM applications or agentic AI systems
  • Mentoring or leadership experience
Posted 2026-03-31

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